Type-writing machine.



JfG. MOLAUGHLIN. TYPE WRITING MACHINE;- APPLICATION IILED FEB. 7, 190B.

Patented Feb. 8, 1910.

h ifnesses /n van/0r v 2i, 6 M45 /m I flfiargnwdey lions. Fig. 2 showsJOHN C. MOLAUGHLIN,

TYPEWRITER COMPANY, or NEW YORK, n.

OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO UNDERWOOD' Y., A CORPORATION OFNEW JERSEY.

TYPE-WRITING MACHINE.

ceases.

Specification of Letters Patent.

Patented Feb. 8, 1910.

Application filed February 7,1903. Serial No. 414,664.

To all whom it may concern:

Be it known that I, J 01in .C. MCLAUGH- LIN a citizen of the nitedStates, residing in ersey City, in the county of Hudson and State of NewJersey, have invented certain new. and useful Improvements in Type-VVriting Machines, of which the following is a s ecification.

This invention relates to the keys oftypewriting and other instruments,and particu larly to the denomination keys of tabulating mechanisms inwhich it is sometimes desired to have the same key indicate either one"or another denomination. I

The object of the invention is to provide simple and practicable meansfor efiecting the desired changes in the keys.

In accordance with the present invention, a disk is provided with twosets of characters, and a shutter is placed over the disk and providedwith an aperture or apertures sufficient to disclose only one set ofcharacters. The shutter is fixed, and the character disk is connected tothe key'cap, both being revoluble to bring the other set of charactersinto view beneath the opening in the shutter. I also provide suitablemeans .for detaining the cap and the character disk in position to showeither set of characters.

In the accompanying drawings, Figure 1 is a diagrammatic plan showing inthe upper row a set of denomination keys, of which the first four are ofordinary construction and the last six are constructed in accordancewith the invention. Upon these six keys the fixed'shutters are shown,the movable disks being partly covered up thereby. In said figure, thesecond row shows the same six keys, the movable disks having been turnedso that the keys may now be used for different denominations. Vhenadjustedaccording to the first row, the ten keys and their stops areadapted for denominational work up to millions, with punctuation marksbetween the hundreds andthousands, between the hundreds of thousands andmillions. In the lower row, the punctuation marks are omitted and thecapacity of the mechanism is increased to. hundreds ofmildiagrammatically a perspective of componeneparts of the keysseparated from one another. Fig. 3 is a vertical sectional view of thekey. Fig. 4 is a horizontal section taken above showing the relationbetween and also the shutter and the sets of characters. Fig. 5 is ahorizontal section of the key-cap. Fig. 6 is a diagram showing the keyconnected to a denomination stop.

The key is illustrated as mounted upon a stem 1, the latter carried upona lever 2,

which is connected to a rod 3 having atits upper end a denomination stop4 to cooperate with a column stop 5 carried upon a rack or bar 6 mountedupon the usual oarr1age (not shown). The key comprises a base or seat 7fixed upon the stem 1; a post 8 rising from the middle of the seat; acharacter-bearing disk 9 pivoted upon the post and having one or morenibs or projections 10 whereby it may be revolved; a shutter 11 providedwith openings 12, 13 and riveted upon the top of the post 8, and a cap14 in the form of a ferrule and having ears 15 to catch under the seat 7\Vithin the cap is forced or otherwise secured a thin annular lining 16,having opposite slots 17 to engage the nibs 10 of the character disk, torotate the latter to bring either set of charactersthereon below theppenings (or double opening) 12, 13. The cap has a mm 19 turned overupon a transparent cover in the form of a glass disk 20, the latterbeing retained by means of the lining 16. A ring 21 rests upon theshutter 11, and it will be seen that the glass disk 20 is confinedbetween the rim 19 and said ring '21 and lining 16. The twolast-mentioned parts may he made in one piece.

At Fig. 4, characters through the openings in characters 1 T (seen incovered up by the shutter. The former char- 10'T are seen the shutter,while acters showing acters lie at right angleswith the latter, so thata quarter revolution of the character disk causes 10 TTto become hiddenand 1 T to be brought into view. Between the disk 9, which is movable upand down on the post 8,'and the seat 7, is a compression spring 22-,which is coiled around the post and rests upon the seat, and bears upagainst a washer 22 placed against the under side of the character disk9. Upon the under side of the shutter 11 I form a projection 23, whichmay engage either of two depressions 24 formed on the top side of thecharacter disk, thus enabling the spring to detain the latter witheither set of charthrough the shutter. Then it is desired to change fromone set to the other set, it is only necessary to turn the dotted lines)arekey-caplet until the other depression 2% character disk, andarevoluble cap connectcomes into register with the projection 23,whereupon the spring 22-snaps the disk 9 upwardly and holds it againstaccidental turning.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.

Having thus described my invention, I claim:

1. A key within which is confined a disk having four characters thereon,a shutter having an opening through which only two of said charactersmay-be read, and means upon the exterior of the key for effectingrelative revolution of the character disk and the shutter.

2. A key within which are confined two disks, one of which is revolubleand provided with characters, the other disk being fixed to the key andhaving an opening through which to read any selected characters.

3. A key provided with a revoluble character disk and a shutter, andalso having a cap connected to the character disk to adjust the same.

t. A key provided with a revoluble character disk and a shutter, andalso having a cap connected to the character disk to-adjust the same;said cap having a transparent disk over said shutter.

5. A key comprising a trans arent disk, a shutter beneath the disk, anmeans for exhibiting difierent characters at will beneath the shutter.

6. A key comprising a transparent disk, a revoluble cap, a fixedshutter, and means connected to said cap forexhibitin beneath said diskdifi'er'ent characters at wi l.

7. A key comprising a transparent'disk, a shutter beneath the same, ashiftable character-bearing device beneath the shutter, and a revolublefinger-piece connected to the character-bearing device.

v8. A key having a revoluble character disk, a fixed shutter above thesame, a spring pressing the disk against the shutter, and a detentbetween the shutter and the disk for detainin the disk in diiferentpositions.

9. A key aving two disks, one being in the form of a shutter and theother bearing characters, a cap connected to one of said disks torevolve the same, and, a snap spring forholding said cap and said diskin either of a plurality of positions.

10. In combination, a character-bearing disk, a shutter thereover, atransparent cover over the shutter, and a key cap inclosing-said diskand cover and connected to the disk to revolve the same independently ofsaid shutter.

' 11. A key comprising a seat, a compres sion spring resting thereon, acharacter disk st-ing upon the spring, a shutter. on the around the -bleupon the upon the shutter,

ed to said character disk; 7 12, A key comprising a seat, a compression5 rinrestin thereon ,a revoluble P g e a of the'post, and a capconnectedto said disk.

l4. A key comprlsing a seat, a central post, a compression spring coiledaround the post and resting upon the seat, a character disk revolubleupon the post and having a nib, a shutter fixed upon the top of I thepost, and a cap in the form of a ferrule and having a rim turned over11' cover, the cover being confined y a lining secured Within the cap,said lining having a slot to engage said nib.

15. A key' comprising a seat havin a central post, a character diskrevolub e upon the post and having a nib, a shutter fixed upon the topofthe post, and a cap having a rim turned over upon a glass disk, theglass disk bein confined by a lining secured in the cap, sai lininghaving a slot to engage said nib, and said cap having ears catchingunder said seat. p

16. A key comprising a seat having a central post, a compression springuponthe seat, a character disk revoluble upon the on a glass post andhaving a nib, a shutter fixed upon the top of the postand having adetent to engage either of two depressions formed in the character disk,a'ring resting u on the shutter and supporting a cap inthe orm of aferrule and having a rim turned over upon 7 a transparent disk, thelatter being confined by alinin secured inthe cap, said lining having as ot to engage said nib. 17 A key comprising a seat having a centralpost, a compression spring coiled post and resting upon the seat, aWasher resting u on the compression spring, a character dlsk revolubleupon the post and having a nib, a shutter fixed upon the top of thepost, a cap in the form of a ferrule and .having a rim turned over upona glass disk, the glass disk being confined by a lining secured in thecap, said linin having a slot to engage said nib, and sai cap havingmeans catching under said seat.

18. A key comprising a seat carriedupon a stem and havin a central post,a compressionsprin coiled around the and resting upon 15 e seat, aWasher resting upon the compression spring, a character disk revolufixedupon tiie top of,the fpost and having a detent to engage either 0 twodepressicns formed in the character disk, a ring resting ferrule andhaving a rim turned'over upon a, transparent cover. the cover b611120011- a cap in the form of a- 0st and having a nib, a shutter Mamafins-Kl by a fining secured. in the cap, Saki ferrule and having alining, and a gjia lining having a siot to engage said nib, said coverconfined by said lining the latter hzw- '(1 ring and said lining, ing aslot to engage said nib.

tching under JOHN C. ELECLAUGHLHQL Witnesses:

cover rest. 1g upcn saw and Saul cap having ears .021

JOHN C. SEIFERT, K. FRANKFQRT.

said seat A key comprlslng a revoluble character disk havmg :1 rub, acap 1n the form pf 21

